A team of dental physical scientists have been using x-ray diffraction to study the development of children's teeth in order to track migration patterns of our ancestors.

The team has been using the festively-named XMaS facility (X-ray Magnetic Scattering) at the European Synchrotron Radiation Facility in Grenoble to perform detailed analysis of tooth structure and composition. The work will make it possible to re-interpret archaeological records of ancient human migrations and may also help scientists to regrow human teeth lost due to disease or age.